Currently, the state of OCaml◎Scope is still at the proof-of-concept level. Many things to be done, search result tweak, UI, tools, etc... but so far, I am happy with its search speed and rather small memory consumption. Currently it has nearly 150k entries (100 OCamlFind packages including lablgtk, core, batteries, ocamlnet and eliom) takes 2secs maximum per search.